Steel Roller could be a Steel-type clone of Steamroller. I envision Klinklang, Perrserker, Copperajah, and Registeel learning this attack.
Scale Shot is most likely a Dragon-type attack teachable to Kommo-o. I'd imagine it being a combination of Clanging Scales and Superpower.
Lash Out could be a Dark-type move similar to Outrage. Zarude, Tyranitar, Galarian Moltres, Hydreigon, Morpeko, and Yveltal might learn it.
Coaching is most likely a status move Passimian and Cinderace could learn, considering the massive emphasis on sports such as soccer in Galar.
Misty Explosion might be a signature move of Galarian Weezing, which could function as a STAB Explosion.